Question

if angleof quadrilateral abcd is in the ratio 4:5:7:8,then quadrilateral abcd is a ______
how

Answer 1

angle sum of quadrilateral is 360degree
let ratio constant be x
=>4x+5x+7x+8x=24x=360
=>x=360/24=15
so the angles r4*15=60
5*15=75
7*15=105
8*15=120
from here u can see we get two pairs of angles which r supplementary
75+105=180
and 60+120=180
so as angles r supplementary probable that the quadrilateral is a parallelogram

Answer 2

this is the answer......